How do I return JSON and loop through the returned json in jQuery in MVC app?

Question

I have an MVC controller that returns JSON. I want to read/get that JSON using jQuery and loop through the json items/rows.

Basically I am reading bunch of comments

Answer 1

The answer to your first problem is to allow Json to work in a GET. Json normally only work for a post. You allow Json in GET by using the following return method in your controller (using one of your return statements).

return Json(new { comments = "none" }, JsonRequestBehavior.AllowGet)

Edit: You can also return JsonResult instead of ActionResult as seen below.

public ActionResult GetComments(string blog_id, int page_size, int page_no)    
{           
    try        
    {
        List comments = ReadCommentsFromDB();

        // Assuming that Comments will be an empty list if there are no data
        return Json(comments, JsonRequestBehavior.AllowGet)
    }
    catch (Exception ex)
    {
        return Json(new { comments = ex.ToString() }, JsonRequestBehavior.AllowGet));
    }
}